- Host accounts now have an optional email field
- Creating a host with an email sends a welcome email with the portal
URL, username, and password via Resend
- Resetting a password also emails the new credentials if the host
has an email on file; admin sees a confirmation either way
- Admin panel shows email column and confirmation messages
- Portal URL changed from /host-upload to /host
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>